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Influence of Multiwall Carbon Nanotubes on Fresh-State Properties of Alkali-Activated Geopolymer Composites
https://orcid.org/http://orcid.org/0009-0001-9978-5658
Nanomaterials are well known to improve concrete microstructure and enhance fresh-state and hardened properties. This paper presents the influence of multiwall carbon nanotubes (MWCNTs) and reagent types on fresh-state properties of alkali-activated mortars (AAMs) and corresponding fiber reinforced alkali-activated engineered composites (AAECs). Ambient-cured AAMs/AAECs mixes are developed using the “one-part mix” technique incorporating two types of powder-based activators/reagents, varying contents MWCNT (0–0.6%), binary combinations of industrial waste-based source materials (such as: ground granulated blast furnace slag “GGBFS” and Class C fly ash), silica sand and polyvinyl alcohol (PVA) fiber. Fresh-state properties of AAMs are investigated based on mini-slump flow evolution with time and setting times while based on fresh density, slump flow, T50 and slump velocity for AAECs. The influences of activator types and MWCNT dosages on fresh-state properties are analyzed and discussed. The study showed that increasing MWNCTs resulted in lower mini-slump flow and setting times. The reagent types also influenced the flow characteristics. Developed MWCNT-incorporated AAECs satisfied the criteria for possessing good flowability.
Influence of Multiwall Carbon Nanotubes on Fresh-State Properties of Alkali-Activated Geopolymer Composites
https://orcid.org/http://orcid.org/0009-0001-9978-5658
Nanomaterials are well known to improve concrete microstructure and enhance fresh-state and hardened properties. This paper presents the influence of multiwall carbon nanotubes (MWCNTs) and reagent types on fresh-state properties of alkali-activated mortars (AAMs) and corresponding fiber reinforced alkali-activated engineered composites (AAECs). Ambient-cured AAMs/AAECs mixes are developed using the “one-part mix” technique incorporating two types of powder-based activators/reagents, varying contents MWCNT (0–0.6%), binary combinations of industrial waste-based source materials (such as: ground granulated blast furnace slag “GGBFS” and Class C fly ash), silica sand and polyvinyl alcohol (PVA) fiber. Fresh-state properties of AAMs are investigated based on mini-slump flow evolution with time and setting times while based on fresh density, slump flow, T50 and slump velocity for AAECs. The influences of activator types and MWCNT dosages on fresh-state properties are analyzed and discussed. The study showed that increasing MWNCTs resulted in lower mini-slump flow and setting times. The reagent types also influenced the flow characteristics. Developed MWCNT-incorporated AAECs satisfied the criteria for possessing good flowability.
Influence of Multiwall Carbon Nanotubes on Fresh-State Properties of Alkali-Activated Geopolymer Composites
https://orcid.org/http://orcid.org/0009-0001-9978-5658
Nanomaterials are well known to improve concrete microstructure and enhance fresh-state and hardened properties. This paper presents the influence of multiwall carbon nanotubes (MWCNTs) and reagent types on fresh-state properties of alkali-activated mortars (AAMs) and corresponding fiber reinforced alkali-activated engineered composites (AAECs). Ambient-cured AAMs/AAECs mixes are developed using the “one-part mix” technique incorporating two types of powder-based activators/reagents, varying contents MWCNT (0–0.6%), binary combinations of industrial waste-based source materials (such as: ground granulated blast furnace slag “GGBFS” and Class C fly ash), silica sand and polyvinyl alcohol (PVA) fiber. Fresh-state properties of AAMs are investigated based on mini-slump flow evolution with time and setting times while based on fresh density, slump flow, T50 and slump velocity for AAECs. The influences of activator types and MWCNT dosages on fresh-state properties are analyzed and discussed. The study showed that increasing MWNCTs resulted in lower mini-slump flow and setting times. The reagent types also influenced the flow characteristics. Developed MWCNT-incorporated AAECs satisfied the criteria for possessing good flowability.
Influence of Multiwall Carbon Nanotubes on Fresh-State Properties of Alkali-Activated Geopolymer Composites
Lecture Notes in Civil Engineering
Desjardins, Serge (Herausgeber:in) / Poitras, Gérard J. (Herausgeber:in) / Alam, M. Shahria (Herausgeber:in) / Sanchez-Castillo, Xiomara (Herausgeber:in) / Hossain, M. A. (Autor:in) / Hossain, K. M. A. (Autor:in)
Canadian Society of Civil Engineering Annual Conference ; 2023 ; Moncton, NB, Canada
Proceedings of the Canadian Society for Civil Engineering Annual Conference 2023, Volume 7 ; Kapitel: 26 ; 313-324
15.09.2024
12 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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